Digital Watermarking: Third International Workshop, IWDW 2004, Seoul, Korea, October 30 - November 1, 2004, Revised Selected PapersIngemar J. Cox, Ton Kalker, Heung-Kyu Lee Springer, 2005. gada 9. febr. - 306 lappuses We are happy to present to you the proceedings of the 3rd International Workshop on Digital Watermarking, IWDW 2004. Since its modern reappearance in the academic community in the early 1990s, great progress has been made in understanding both the capabilities and the weaknesses of digital watermarking. On the theoretical side, we all are now well aware of the fact that digital watermarking is best viewed as a form of communication using side information. In the case of digital watermarking the side information in question is the document to be watermarked. This insight has led to a better understanding of the limits of the capacity and robustness of digital watermarking algorithms. It has also led to new and improved watermarking algorithms, both in terms of capacity and imperceptibility. Similarly, the role of human perception, and models thereof, has been greatly enhanced in the study and design of digital watermarking algorithms and systems. On the practical side, applications of watermarking are not yet abundant. The original euphoria on the role of digital watermarking in copy protection and copyright protection has not resulted in widespread use in practical systems. With hindsight, a number of reasons can be given for this lack of practical applications. |
No grāmatas satura
1.–5. rezultāts no 22.
3. lappuse
... PSNR of marked images with respect to original images. Recently, some integer wavelet transform based reversible data hiding schemes have been developed by Xuan et al. [16,17], which have demonstrated superior performance over that ...
... PSNR of marked images with respect to original images. Recently, some integer wavelet transform based reversible data hiding schemes have been developed by Xuan et al. [16,17], which have demonstrated superior performance over that ...
4. lappuse
... PSNR of the marked image versus the original image is about 36.06 dB. Note that the embedding strength six is rather high and there are some block artifacts in the marked image generated with this embedding strength. On the one hand ...
... PSNR of the marked image versus the original image is about 36.06 dB. Note that the embedding strength six is rather high and there are some block artifacts in the marked image generated with this embedding strength. On the one hand ...
6. lappuse
... PSNR (dB) (a) 50 48 44 46 PSNR (dB) 38 40 42 36 0 0.1 0.4 0.5 0.6 0.7 30 32 34 0.2 0.3 Payload Size(bpp) (b) Companding Spread Spectrum Bitplane Compression Difference Expansion Fig. 1. Comparison results on Lena (left) and Barbara ...
... PSNR (dB) (a) 50 48 44 46 PSNR (dB) 38 40 42 36 0 0.1 0.4 0.5 0.6 0.7 30 32 34 0.2 0.3 Payload Size(bpp) (b) Companding Spread Spectrum Bitplane Compression Difference Expansion Fig. 1. Comparison results on Lena (left) and Barbara ...
7. lappuse
... PSNR. It is clear that the IWT-based companding algorithm performs best. This can be explained from an investigation on the amount of magnitude that the selected IWT high frequency coefficients have been changed and how many ...
... PSNR. It is clear that the IWT-based companding algorithm performs best. This can be explained from an investigation on the amount of magnitude that the selected IWT high frequency coefficients have been changed and how many ...
8. lappuse
... PSNR of stegoimage versus the original image is below 10 dB when 476 information bits are embedded into this 512x512 image. Not only for medical image, the salt-and-pepper noise may be severe for color images as well. We have applied ...
... PSNR of stegoimage versus the original image is below 10 dB when 476 information bits are embedded into this 512x512 image. Not only for medical image, the salt-and-pepper noise may be severe for color images as well. We have applied ...
Saturs
1 | |
Informed Detection Revisited | 29 |
A CounterGeometric Distortions Data Hiding Scheme Using | 42 |
A Secure InternetBased Personal Identity Verification System Using | 55 |
Watermarking System for QoS Aware Content Adaptation | 77 |
Robust Estimation of Amplitude Modification for Scalar Costa Scheme | 101 |
Reversible Data Hiding Using Integer Wavelet Transform | 115 |
Authentication and Stego | 125 |
Security of WSS Techniques | 171 |
Flaws in Generic Watermarking Protocols Based | 184 |
A Generalized Method for Constructing and Proving | 204 |
Towards the Public but Noninvertible Watermarking | 218 |
A Generalization of an Anonymous BuyerSeller Watermarking | 232 |
Watermarking Technique for Authentication of 3D Polygonal Meshes | 259 |
FidelityControlled Robustness Enhancement of Blind Watermarking | 271 |
A Video Watermarking Using the 3D Wavelet Transform | 294 |
Citi izdevumi - Skatīt visu
Digital Watermarking: Third International Workshop, IWDW 2004, Seoul, Korea ... Ingemar J. Cox Ierobežota priekšskatīšana - 2005 |
Digital Watermarking Ingemar Cox,Matthew Miller,Jeffrey Bloom,Mathew Miller Ierobežota priekšskatīšana - 2001 |
Bieži izmantoti vārdi un frāzes
affine transformation algorithm applied attacks authentication B-spline binary images bit-plane block buyer capacity coding companding compression Computer control points Costa’s cover-object cryptography define denotes detector digital watermarking distribution domain embed embedded watermark embedding pattern encrypted equation estimated experimental results extracted fingerprint frequency geometric distortions histogram I.J. Cox IEEE Image Processing imperceptibility Information Hiding invertible IWDW JPEG LNCS marked image marking frequencies matrix mesh model method modified Multimedia multiresolution analysis noninvertibility obtained optimal original image paper perceptual performance pixels polygonal mesh Proc proposed protocol PSNR quantization step random reverse engineering reversible data hiding robustness scaling Section sequence Signal Processing spatial spread spectrum Springer-Verlag steganographic termark transcoding transcoding parameter triangle verify vertex norms video transcoding visual watermark bit watermark detection watermark embedding watermark signal watermarked image watermarking algorithm watermarking scheme watermarking technique wavelet coefficient vectors wavelet transform zero-knowledge ZKWP system